Mitek amd eeamxntg instrument



Sept. 14 1926.

MITER AND FRAMING INSTRUMENT 1,599,479 c. E. LowRY b Filed June 23, 19242'Sheets-Sheet. l

Patented Sept. ll,

was, n

MTER AND FRAMNG INSTRUMENT.

Application tiled .Tune 23, 1924..

This invention relates to mitering and y framing instruments, and itconsists in the `position with relation to the turret.

novel `tentures hereinatter described and claimed.

An object of the invention is to provide in a unitary assemblageo-parts, elements and features, an instrument which maybe convenientlyand accurately used as a rule, square, level, bevel., height gauge anddepth gauge. i

lfith the above objects in View, theirsstrument includes a stock havinga turret turnably mounted therein, and means Stor clamping the turret atan adjusted position with relation to the Stock. AThe turret and thestock are each provided with a level. A blade is carried by the turretand means are provided for securing the blade at aiixed The stock isprovided with a bore, which may reA ceive and retain a scriber and ashaft centering head is carried by the blade.

ln the accompanying drawings:

Figure 1 is a side elevation ot the mitering and framing instrument.

Figure 2 is an enlarged side elevation ot' the stock oi' theinstruniient illustrating the opposite side thereof, from that sideshown in Figure 1.

IFigure 3 is a transverse sectional view ot .the instrument, cut on theline 3-3 oi ure 1.

Figure 4lis a. fragmentary sectional view through the turret of theinstrument on the line 4.-4 ot' Figure 2.

Figure 5 is a perspective view ot a securing bolt 13 used in theinstrument.

Figure 6 is a fragmentary side elevational view orn the stock ot' theinstrument, with parts shown in section, and illustrating the scriberheld in the stock.

Figure 7 is a perspective view of an end portion of a blade used in theinstrument.

Figure 8 is a perspective viewiot a shaft centering head used upon theinstrument.

As illustrated in the accompanying drawings, the framing and miteringinstrument comprises the stock 1 having an upper corner portion 2bevelled ofi at an angle ot 'forty-live degrees to the base line of thestock. The stock is provided at one end with a bore 3, which mayreceiveand retain the scriber fl. The stock is further provided with aspirit level 5. The stock 1 is provided vvith a circular opening 6. Aturret 7 lits in the opening 6 and is provided with Serial No. 121,804.

an annular flange 8 which is externally threaded. ,A nut 9 is screwedupon the flange 8 and engages the threadsthereoif,

and is adapted to bear against the side olf.

t-he stoclr 1, whereby the turret i' is held at an adjusted position inthe opening 6 oi the stock. A. spirit level l0 is carried within theflange 8 ot the turret. A blade 11 passes through the edge portion otthe turret 7 and is provided at its side with a longitudinally disposedgroove l2. A bolt `13 passes through the intermediate portion oit thetur-- ret 7 and is provided at its ends with a lug 11i which engages theeind of the groove 1Q oi. theblade. The bolt 13 is provided at its sidewith a flange l5, which is adapted to tit in a recess provided in theturret 7, whereby the said bolt is restrainet against turning movementwith relation to the turret and the blade. A nut 16 is screwed upon theouter end ot the bolt 13, and a Spying 17 i5 nteposd between the bodymi` the turret and the nut and serves to hold the nut against turningmovement withrelation to the bolt. A shaft centering head 2O is providedwith a shank 21, which receives the edge portion of the blade l1, andwhich carries 4a bolt 22 similar to the bolt 13 hereinbetere` described,and whichv engages in the` groove ofthe blade and holds the shaitt cen-vtering bit at anadjusted position along the blade.

The `stock is provided with a graduations 23, the turret withgraduations 2li. rl`he stoelr is also provided with a vseries ofgraduation's 25 and calculating tables 2G.

lt is apparent that the parte of the instrument may be adjusted withrelation to each other and temporarily secured whereby the instrumentmay be used as a rule. square, bevel, level, height gauge and depthgauge. rlhe miter cut for `all polygons up to twelve ides may beobtained accurately and quicli- 'lhe tables which give the length of thesides oi all polygons up to twelve sides, with an inscribed and acircumscribed diameter series of of one i'oot, will prove to be otgreatassistance to the mechanic as a time saver.

The blade 11 is graduated on both sides so that it may be used as arule,` independently or the stock 1. When the instrument is used as asquare, the blade 11 is inserted through the edge portion ot the turret7 so that the lug 1a on the end of bolt 13 ense ies oi" iuo y gages thegroove 12 of the blade. The stock may then be slid along the blade sothat said blade may be shortened or lengthened as desired. rlhe blade isthen secured by tightening the nuts 16. By loosening the nut 9, theturret T may be moved until the line marked Pitch will coincide With the90O graduation; the turret 7 is secured by tightening the nut 9. 'Whenused as a bevel, the nuts 9 and 15 are loosened thus allowing bothturret 7 and blade 11 to be adjusted to the angle desired, after settingis made both nuts 9 and 16 are tightened.

The instrument may be used as a level Without the blade, While With ablade of any desired length, a Vlevel of corresponding length isobtained b v inserting the blade and moving turret 7 until the linemarked Pitch coincides with the 90O graduation, the level 10 on turret 7Works in conjunction with the blade.

Villen the instrument is used as a height gage, the turret 7 is moveduntil the line marked Pitch Will coincide With the 90o graduation, andthen clamped by tightening nut 9, blade 11 is then inserted and moveduntil its end is iiush with the base line of the stock 1, and thenclamped by tightening nuts 16.

Wvhen used as a depth gauge, the turret 7 is moved. until the linemarked c will coineide with the 90O graduation, and then clamped bytightening nut 9, blade 11 is then inserted and clamped at any desiredplace by tightening nut 16. The graduations 2d are used to lind themiter cuts, both right and left for all polygons from the triangle tothe dodeeagon, inclusive; thus if it is desired to obtain the initer cutfor a hexagon, move the turret 7 until the graduation 6 of the group ofgraduation 2d Will coincide With the 900 graduation. After clampingturret 7, place the base line of the stock 1 against the Work and drawor scribe a line against the blade. This line Will be the miter for theheaagon. The miter cuts for other polygons are found in like manner.

The graduations 25 are used to find the miter cuts of rafters for roofsof different pitch from one-tWenty-fourth pitch to pitch 1 or unity;thus if it is desired to cut rafters for a roof of 1/3 pitch, move theturret until the marked line of Pitch on the turret will coincide Withone-third graduation 25 on stock 1; after clamping the turret place thebase line of the stoel; 1 against the Work and draw a1 line against theblade. This line will be the bottom or sill cut. New by placing the endof the instrument against the Work and drawing a line against the blade,the top or plumb cut is obtained.

rfhe miter cutsI of other rafters for roofs of different pitch are foundin the same manner.

Having described the invention, what is claimed is:

An instrument of the class described including a stock having indiciaformed thereon and provided with a beveled opening having an annularshoulder formed on its larger' end, said indicia being arranged aboutsaid opening, a turret having an arcuately arranged series of indiciafor cooperating With the indicia on the stock, said turret beingrotatable in the opening and provided With a beveled end to bereceivable in the opening of the stoel; and having a shoulder formedthereon for engaging the shoulder of the stock, said turret beingprovided with an opening concentric Within the beveled edge, said turrethaving a projection in its opening, said projection having a structureadapted to permit a spirit level to be carried thereby, an annularexternally threaded flange projecting from the face of the turretadjacent the smaller end of the beveled edge thereof, a nut threadedlyengaged on said fiange for abutting the turret and the stock to holdthem assembled, a blade having indicia and extending from the stock, andmeans for attaching the blade to the turret.

In testimony whereof I aifix my signature.

GECIL E. LOWTRY.

